Kirchhoff's Current Law (aka Kirchhoff's 1st Law) is one of the fundamental principles in electrical circuit theory. It's named after Gustav Kirchhoff, a German physicist who formulated this law in the mid-19th century. KCL is used to analyze and describe the behavior of electric currents at junction points within electrical circuits.

The statement of Kirchhoff's Current Law is as follows:

"At any junction (or node) in an electrical circuit, the sum of the currents entering the junction is equal to the sum of the currents leaving the junction."

In other words, when you consider a point in a circuit where multiple conductors or wires meet (a node), the algebraic sum of the currents flowing into that node is always equal to the algebraic sum of the currents flowing out of that node. This law is based on the principle of conservation of electric charge, which means that no electric charge is lost or created at a junction; it simply flows in and out.

Mathematically, Kirchhoff's Current Law can be expressed as:

Σ (incoming currents) = Σ (outgoing currents)

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AI Technical Trustability Update

While working on an update to my RF Cafe Espresso Engineering Workbook project to add a couple calculators about FM sidebands (available soon). The good news is that AI provided excellent VBA code to generate a set of Bessel function plots. The bad news is when I asked for a table showing at which modulation indices sidebands 0 (carrier) through 5 vanish, none of the agents got it right. Some were really bad. The AI agents typically explain their reason and method correctly, then go on to produces bad results. Even after pointing out errors, subsequent results are still wrong. I do a lot of AI work and see this often, even with subscribing to professional versions. I ultimately generated the table myself. There is going to be a lot of inaccurate information out there based on unverified AI queries, so beware.

Kirchhoff's Voltage Law (aka Kirchhoff's 2nd Law) is one of the fundamental principles in electrical circuit theory. It's named after Gustav Kirchhoff, a German physicist who formulated this law in the mid-19th century. KVL is used to analyze and describe the behavior of voltage in closed electrical circuits.

The statement of Kirchhoff's Voltage Law is as follows:

"In any closed loop or mesh within an electrical circuit, the sum of the voltage rises is equal to the sum of the voltage drops."

In other words, when you traverse a closed loop in a circuit and take into account all the voltage sources (voltage rises) and voltage-consuming elements (voltage drops) encountered along the way, the algebraic sum of these voltage changes is always zero. This is based on the conservation of energy, which states that energy cannot be created or destroyed but only transferred or transformed. In an electrical circuit, the voltage changes account for the energy transfer, and KVL ensures that no energy is lost or gained within a closed loop.

Mathematically, Kirchhoff's Voltage Law can be expressed as:

Σ (voltage rises) = Σ (voltage drops)

This content was generated by primarily the ChatGPT (OpenAI), and/or Gemini (Google), and/or Arya (GabAI), and/or Grok (x.AI), and/or DeepSeek artificial intelligence (AI) engine. Some review was performed to help detect and correct any inaccuracies; however, you are encouraged to verify the information yourself if it will be used for critical applications. In some cases, multiple solicitations to the AI engine(s) was(were) used to assimilate final content. Images and external hyperlinks have also been added occasionally. Courts have ruled that AI-generated content is not subject to copyright restrictions, but since I modify them, everything here is protected by RF Cafe copyright. Many of the images are likewise generated and modified. Your use of this data implies an agreement to hold totally harmless Kirt Blattenberger, RF Cafe, and any and all of its assigns. Thank you. Here are the major categories.

Electronics & High Tech Companies | Electronics & Tech Publications | Electronics & Tech Pioneers | Electronics & Tech Principles | Tech Standards Groups & Industry Associations | Societal Influences on Technology

AI Technical Trustability Update

While working on an update to my RF Cafe Espresso Engineering Workbook project to add a couple calculators about FM sidebands (available soon). The good news is that AI provided excellent VBA code to generate a set of Bessel function plots. The bad news is when I asked for a table showing at which modulation indices sidebands 0 (carrier) through 5 vanish, none of the agents got it right. Some were really bad. The AI agents typically explain their reason and method correctly, then go on to produces bad results. Even after pointing out errors, subsequent results are still wrong. I do a lot of AI work and see this often, even with subscribing to professional versions. I ultimately generated the table myself. There is going to be a lot of inaccurate information out there based on unverified AI queries, so beware.